With most precincts reporting, McCain held a 36-31 percent lead over former Massachusetts Gov. Mitt Romney

Former New York Mayor Rudy Giuliani was a distant third in the Republican contest

A Florida win gives McCain all 57 of the delegates at stake

Clinton had about 50 percent of the Democratic vote; Illinois Sen. Barack Obama was in second with 33 percent, and former North Carolina Sen. John Edwards was in third with 14 percent

The Democratic vote may have little impact on the presidential race, however, because the party's national leadership said it would not allow Florida's delegates to participate in the national convention because of a squabble over scheduling

Eligible voters in both the Democratic and Republican parties go to the polls on primary day, January 29, 2008, and cast ballots in their respective contests. Each party uses its own formula to determine how to allocate delegates to their national conventions based on the outcome of the vote. Since Florida officials moved up the primary date in violation of both national Democratic and Republican party rules, the number of delegates each party may send to the national party conventions will likely be cut significantly.